But anyone prepared to try three mystery bags - and correctly guess their flavours - could win a share of £150,000.

Match Of The Day presenter Gary Lineker is fronting a new campaign for Walkers alongside boy band The Wanted and The Only Way Is Essex stars Joey Essex and Chloe Sims.

The television advert features the famous names struggling to figure out the secret flavours.

Lineker said: "The three mystery flavours have been designed to spark a national flavour conversation and I think the new advert encourages just that.

"It's been hilarious hearing everyone else's guesses and it's been great getting a helping hand from some familiar faces."

Miranda Sambles, marketing director for Walkers, said: "We're very excited about the new ad in which we see the Great British public, accompanied by some famous faces, taking part in the new campaign."

The What's That Flavour? competition will give £50,000 to three lucky winners chosen from a pool of correct answers.